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Zip Code information for Seneca, Iowa.

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Seneca Zip Codes

What are the Seneca, Iowa Zip Codes for 2020, 2019

Primary Zip Codes for Seneca

Zip Code	Primary City	Secondary City
50539	Fenton	Seneca

Cities sharing Zip Codes with Seneca

Zip Code	Primary City	Secondary City	More Information
50539	Fenton	Seneca

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Content provided by the US Census bureau for the years 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024.

The Census Bureau can also provide statisics and demographics for 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 and 2009 on their website